Class: ActiveRecord::Tasks::SQLiteDatabaseTasks

Inherits:
Object
  • Object
show all
Defined in:
activerecord/lib/active_record/tasks/sqlite_database_tasks.rb

Overview

:nodoc:

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(db_config, root = ActiveRecord::Tasks::DatabaseTasks.root) ⇒ SQLiteDatabaseTasks

Returns a new instance of SQLiteDatabaseTasks.



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# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 12

def initialize(db_config, root = ActiveRecord::Tasks::DatabaseTasks.root)
  @db_config = db_config
  @root = root
end

Class Method Details

.using_database_configurations? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 8

def self.using_database_configurations?
  true
end

Instance Method Details

#charset ⇒ Object 



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# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 41

def charset
  connection.encoding
end

#create ⇒ Object

Raises:



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# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 17

def create
  raise DatabaseAlreadyExists if File.exist?(db_config.database)

  establish_connection(db_config)
  connection
end

#drop ⇒ Object 



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# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 24

def drop
  require "pathname"
  path = Pathname.new(db_config.database)
  file = path.absolute? ? path.to_s : File.join(root, path)

  FileUtils.rm(file)
rescue Errno::ENOENT => error
  raise NoDatabaseError.new(error.message)
end

#purge ⇒ Object 



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# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 34

def purge
  drop
rescue NoDatabaseError
ensure
  create
end

#structure_dump(filename, extra_flags) ⇒ Object 



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# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 45

def structure_dump(filename, extra_flags)
  args = []
  args.concat(Array(extra_flags)) if extra_flags
  args << db_config.database

  ignore_tables = ActiveRecord::SchemaDumper.ignore_tables
  if ignore_tables.any?
    condition = ignore_tables.map { |table| connection.quote(table) }.join(", ")
    args << "SELECT sql FROM sqlite_master WHERE tbl_name NOT IN (#{condition}) ORDER BY tbl_name, type DESC, name"
  else
    args << ".schema"
  end
  run_cmd("sqlite3", args, filename)
end

#structure_load(filename, extra_flags) ⇒ Object 



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# File 'activerecord/lib/active_record/tasks/sqlite_database_tasks.rb', line 60

def structure_load(filename, extra_flags)
  flags = extra_flags.join(" ") if extra_flags
  `sqlite3 #{flags} #{db_config.database} < "#{filename}"`
end